Direct-current arc lamp

Details Direct-current arc lamp Direct-current arc lamp

1998-03-12

2000-04-18

Patel, Vip

Electric lamp and discharge devices

With gas or vapor

With particular gas or vapor

313573, 313640, H01J 1720

Patent

active

060519290

ABSTRACT:
The metal-halide direct-current arc discharge lamp has a fill system which as cadmium and/or zinc as components of the central fill in addition to an ignition gas, mercury, and a halogen. Preferably, the fill is retained in a bulb (10) which is asymmetrical with respect to a central plane (1) perpendicular to a longitudinal axis (2) of the lamp. The lamp is particularly suitable for use in combination with an optical projection system (R), especially when operating in horizontal position.

REFERENCES:
patent: 2965790 (1960-12-01), Ittig et al.
patent: 4360756 (1982-11-01), Spencer et al.
patent: 4686419 (1987-08-01), Block et al.
patent: 4935668 (1990-06-01), Hansler et al.
patent: 4937496 (1990-06-01), Neiger et al.

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